//1.单独暴露
    export let school = 'tgu';
    export function run() {
        console.log('dasf');
    }


//2.统一暴露
    let school1 = 'tgu';
    function run1() {
        console.log('daf');
        
    }
    export {school1,run1};
    

//3.默认暴露(类似又定义了一个对象  )
    export default{
        school2:'tgu',
        run2: function() {
            console.log('dfadf');
        }
    }
